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1986年3月煤炭部中南物管处邀请湖南涟源钢铁厂到平顶山矿务局进行现场技术服务,在五矿戊二总回风巷进行历时8天的开缝式钢管摩擦锚杆可行性试验。
March 1986 Central South Property Management Office of the Ministry of Coal invited Hunan Lianyuan Iron and Steel Plant to the Pingdingshan Mining Bureau for on-site technical services, the five mine Mizuho return air lane lasted for eight days of open-seam steel pipe friction bolt feasibility test .